Modern high output diesel engines including those using EGR technology generate higher levels of soot and run at higher temperatures than older, naturally aspirated engines, which significantly increases the demands on engine lubricants. These engine designs reduce oil consumption, resulting in less fresh oil makeup to replenish depleted additives. Top piston rings are located higher on the piston bringing the oil film closer to the combustion chamber where higher temperatures increase thermal stress on the lubricant. Higher fuel injector pressure and retarded timing improve exhaust emission control, but also increase engine temperatures and increase soot loads, including those engines operating with EGR. The key benefits include:

Features

Advantages and Potential Benefits

Outstanding thermal and oxidation stability

Reduced low temperature sludge build-up and high temperature deposits

Extended TBN reserves

Improved soot handling and extended drain intervals

Stay-in-grade shear stability

Reduced oil consumption and wear protection Maintains viscosity in severe, high temperature service